GENIE/Generator releases are numbered with 3 dot separated integers as i.j.k, where the
integers i,j,k correspond to the major, minor and revision number respectively.
The corresponding SVN tag for version i.j.k is R-i_j_k
(for example, GENIE version 2.0.2 is tagged as R-2_0_2).

Tagged versions always have an even revision number (eg 2.2.2 is a revision of the 2.2.0 physics / production
release whereas 2.3.2, 2.3.4, 2.3.6,... are `candidate' releases for the 2.4.0 physics / production release).

old :
Older production versions that have been greatly superseeded by newer versions.
These versions become unsupported.
The typical lifetime of `physics' versions is of the order of 18-24 months.

rc :
Release candidates. Please use for testing new models and features,
but avoid using for physics studies.

special :
Special releases prepared for a particular study, or an event such as a GENIE tutorial or a summer school.
Avoid using outside the intended context.

GENIE/Generator comprehensive model configurations

Starting from v3.0.0, with the deployment of multiple comprehensive configurations and tunes,
and the addition of a `--tune' argument in several apps, GENIE adopted the following uniform
naming convention for its model configurations and tunes:

A comprehensive model configuration is identified by a 7-character string in the form

Gdd_MMv

where

G is a capital letter that identifies the author of the tune.
The default value is G (for the GENIE collaboration).

dd is a number describing the year during which the model configuration was developed.

MM is a number (00, 01, 02, ...) identifying a model configuration branch.

Once a comprehensive model configuration is defined, a number of different tunes may be produced.
Each distinct choice of a) fit datasets and dataset weighting scheme, b) parameters of interest and nuisance parameters,
and c) prior constraints, leads to a different tune. A tune is identified by the model configuration name, and additional
information enumerating the parameters and datasets. This is a 14-character string in the form

Gdd_MMv_PP_xxx

where

Gdd_MMv describes the model configuration (see above).

PP is a number identifying the set of tuned parameters.
This parameter set is defined uniquely only in the context of a particular model configuration.
The number 00 indicates that a model configuration has not been tuned by GENIE.

xxx is a number that identifies the dataset used for the model configuration tuning.
This may include a unique set weights associated with each component dataset.
The number 00 indicates that a model configuration has not been tuned by GENIE.